341. Naphthols are derivates of
Methyl amine
Naphthalene
Phenol
Xylene
✅ The correct answer is option B.
Chemical Process MCQs
342. Absorption of SO₃ in 97% H₂SO₄ is
Exothermic
Endothermic
Not possible
None of these
✅ The correct answer is option A.
343. Kopper-Totzek coal gasifier
Can give ammonia synthesis gas (H₂ + N₂)
Is a moving bed reactor
Cannot use coking coal
Operate at very high pressure
✅ The correct answer is option A.
344. Glass is
Mainly CaO
Subjected to galvanising
A super cooled liquid
All of the above
✅ The correct answer is option C.
345. The main use of HCl is in the
Drilling of petroleum wells and pickling of steel sheets
Manufacture of cationic detergent
Treatment of spent fuel of nuclear reactor
None of these
✅ The correct answer is option A.
346. White phosphorous is stored under water, because
It does not react with water
It is poisonous
Its kindling temperature in dry air is very low
It is unstable
✅ The correct answer is option C.
347. Fermentator temperature during production of alcohol from molasses is around __________ °C.
5
30
150
300
✅ The correct answer is option B.
348. Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement?
Xanthates
Stearic acid
Calcium & aluminium stearate
Formic acid
✅ The correct answer is option C.
349. The terminology ‘BTX’ used in coal tar distillation industry refers to
Benzol-toluol-xylol
Benzol-toluene-xylene
Benzene-toluol-xylol
Benzene-toluene-xylene
✅ The correct answer is option D.
350. Starting raw material for the manufacture of maleic anhydride is
N-butene
Benzene
Either A or B
Neither A nor B
✅ The correct answer is option C.